Cacus

Cacus (Ca`cus) , a mythological brigand of gigantic stature who occupied a
cave in Mount Aventine, represented by Virgil as breathing smoke and
flames of fire; stole the oxen of Hercules as he was asleep, dragging
them to his cave tail foremost to deceive the owner; strangled by
Hercules in his rage at the deception quite as much as the theft.